Support for buffing stems



March 25 1924.

E. POSSON SUPPORT FOR BUFFING STEMS Filed Sept. 22. 1922 TN fl///////////////// V Patented Mar. 25, i324.

earner EDW'ARD POSSON, OF CHICAGO, ILLINOIS, ASSIGNOR 'IO COMMONWEALTH STEEL COM- PANY, OF ST. LOUIS, MISSOURI, A. CORPORATION OF NEW JERSEY.

, SUPPORT FOR BUFFING STEI/IS.

Application filed September 22, 1922.

tothe accompanying drawings, forming part of this application.

My invention relates to railroad rolling stock and consists in an improved end sill and platform buffer stem supporting construction.

My invention is adapted for use particularly in passenger car equipment and the object of my invention is to eliminate wear upon the platform buffer stems. I attain this object by providing a renewable antifriction bearing forthe stem in place of the friction plates now in general use which, although renewable when worn, in use reduce the size of the buffer stem substantially the same amount as they themselves are worn. ld hile it is a comparatively simple matter to replace the bearing plate, it is rather difficult and expensive to replace the buffer stem and my construction eliminates the necessity of renewing the buffer stem or the objectionable reduction in diameter of the stem- In the accompanying drawings illustrating a selected embodiment of my inven tion,- 7

Figure 1 is in part a top View and in part a horizontal section through a passenger car cast steel end sill embodying my invention.

Figure 2 is a front elevation of one-half of the end sill.

Figure 3 is a transverse vertical section through the end sill taken on line 3-3 of Figure 2.

The end sill casting has a front wall 1, a rear wall 2, recessed at 3 to receive the car sills, a top wall 4, and a bottom wall 5. Near the center of the end sill are buffer stem recesses 6 extending horizontally inwardly fromthe front face of the end sill and provided with rear openings 7 through which buifer stems 8 project. The lower wall of each of these recesses is provided with an opening at each side of which are depending Serial No. 589,878.

walls 9 which extend below the lower wall of the end sill and are preferably connected by a horizontal wall 10 located at such depth that access to the space between walls 9 may be had from the front of the sill. Walls -9 are provided with openings 11 in which a pin 12 is mounted and is retained in its mounting by cotters 18. A roller 14- is journaled upon pin 12 and is of such diameter that its upper face projects above the lower wall of recess 6 and is adapted to support the buffer stem 8 above the bottom of the recess.

Obviously, when the buffer 15 is moved backwardly and forwardly, the stem 7, in stead of scraping along a wearing plate, is provided with an anti-friction bearing which practically eliminates wear on the stem and, by forming the stem and bearing of material of suitable relative hardness, it is possible to have all of the wear on the roller or its pin. The mounting of the roller shown and described makes it possible to remove and replace the roller or pin at any time when this wear is so great that the roller fails to support the buffer stem above the bottom of the recess in the end sill.

While I have shown my invention as applied to a cast steel end sill, I do not wish to be limited to such construction as it is obvious that it may be embodied in a built-up end sill or other car platform construction whether of one-piece casting or otherwise.

Various modifications in the details of my construction may be made without departing from the spirit thereof as expressed in the appended claims.

I claim:

1. In a railway car, an end sill having a buffer stem recess and a passage below said recess open thereto and to the exterior of the end sill, and a roller journaled in said sill transversely of and below said recess with its upper surface extending above the lower face of said recess said roller being removable (lownwardly through said passage.

2. In a. railway car, an end sill provided. with a horizontal inwardly extending recess adapted to receive the stem of a platform buffer device, integral spaced parallel vertical walls depending below said recess forming a pocket opening above, into said recess and also opening outwardly of the end sill. said walls having aligned openings disposed longitudinally of the end sill, a journal projecting through said openings and detachably secured thereto, and a stem supporting roller rotatably mounted on said journal and extending above the bottom of saidrecess.

3. In a railway oar, an end sill having a buffer stem recess, the lower wall of which is provided with an unobstructed opening to the exterior of the sill, a buffer plate includ- 10 ing a stem substantially filling said recess,

journal bearings at opposite sides of said opening below said recess, a removable journal seated in said bearings, and a renewable stein supporting roller mounted on said journal and adapted to be removed from said sill throu h said opening.

In testimony whereof I hereunto afiix my signature this 14th day of September, 1922.

EDWARD PossoN. 

